2015/12/29 by F. Belgiorno, Sergio L. Cacciatori, Belgiorno, F. +5
Physics and Astronomy · #Noncommutative and Quantum Gravity Theories #Quantum Mechanics and Applications #Black Holes and Theoretical Physics
paper · pdf · doi:10.48550/arxiv.1512.08738
We investigate the quantization in the Heisenberg representation of a model which represents a simplification of the Hopfield model for dielectric media, where the electromagnetic field is replaced by a scalar field ϕ and the role of the polarization field is played by a further scalar field ψ. The model, which is quadratic in the fields, is still characterized by a nontrivial physical content, as the physical particles correspond to the polaritons of the standard Hopfield model of condensed matter physics. Causality is also taken into account and a discussion of the standard interaction representation is also considered.